Fmtlib Outdated

Hi there,

Fmtlib is outdated in brew (5.3.0 vs 6.0.0 latest release).

If someone can point me any instructions on how to update this I could take a crack at it.

Thanks!

Welcome!

Here are guidelines for modifying homebrew formulae:

and here are guidelines for making a pull request:

There should be a lot of useful information there, but let us know if you have any questions.